Device for energy absorption in particular for an automotive vehicle seat upon impact, said device comprising a first element substantially in the form of a plate with a hole and a second element inserted in the hole, said first element comprising a series of cutouts that are successive along a deformation direction and define a series of yokes between each other extending along a direction of elongation transversal to the direction of deformation, said yokes having each a length along the direction of elongation, said length increases strictly from one yoke to the next according to the distance of the yokes in relation to the second element and the yokes having an overall concavity turned towards the second element.